Introduction - Millipore Microfil Manual De Uso

Introduction

®
The Microfil system is fast, reliable and convenient, consisting of unique ready-to-
use funnels, membranes, and a stainless steel vacuum support. Equipment cleanup,
assembly, packaging, and autoclaving are minimized and the system is much easier
to use than conventional test systems. Because the Microfil system is simple to use,
operator error is minimized. No clamps or complicated sealing mechanisms are
required to ensure a perfect interface between funnel, membrane and support. The
®
Microfil system should be used in conjunction with the EZ-Pak membrane
dispenser for maximum ease of use, speed and cleanliness.
The Microfil system has been carefully designed to provide a more secure and
reliable microbiological test. The membrane transfer has been simplified by use of
a membrane-lifting device that simultaneously equalizes the vacuum on both sides
of the membrane prior to removal. The individual supports can easily be disas-
sembled from the manifold when limited autoclave space is available. As cellulosic
membranes expand when they are wetted, the Microfil support design and specific
dimensions prevent membrane distortion by giving the filter a "saucer" shape. It is
then much easier to transfer onto the media without trapping air bubbles under the
membrane. In addition, the funnel is constructed of a hydrophobic polymer that
ensures that the sample and microorganisms pass onto the membrane and are not
retained on the funnel walls.